A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin...
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Transcript of A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin...
![Page 1: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/1.jpg)
A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers
Benjamin D. Braaten
Sayan Roy*
Sanjay Nariyal
Masud A. Aziz
Bilal Ijaz
Muhammad M. MasudECE Department
North Dakota State University
Fargo, ND, USA.
APPLIED ELECTROMAGNETICS LAB
NORTH DAKOTA STATE UNIVERSITY
![Page 2: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/2.jpg)
1) Introduction and Background
2) The Metamaterial-Based UHF RFID Antenna
3) Measurement and Simulation Results
4) Discussion and Guidelines
5) Conclusion
Topics
NDSU : APPLIED ELECTROMAGNETICS LAB
![Page 3: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/3.jpg)
Introduction and BackgroundThe proposed metamaterial-based UHF RFID reader antenna:
NDSU : APPLIED ELECTROMAGNETICS LAB
The design consists of the following features:
1) Rectangular patches
2) Inter-digital capacitors
3) Tuning stub
4) Series fed array
Reference: S. Paulotto, P. Baccarelli, F. Frezza and D. R. Jackson, “A microstrip periodic leaky-wave antenna optimized for broadside scanning,” IEEE International Symposium on Antennas and Propagation, June 9-15, 2007, pp. 5789-5792.
![Page 4: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/4.jpg)
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The Manufactured Prototypea = 2.15 mmb = 17.19 mmc = 3.1 mmd = 23.6 mme = 32.0 mmf = 6.2 mmg = 5.6 mmh = 13.0 mmj = 8.87 mmk = 41.4 mmm =55.95 mmn = 5.6 mm
p = 44.59 mmq = 8.8 mmW =136.38 mmH = 83.5 mmFinger spacing = 0.8 mmFinger width = 0.4 mmFinger length = 0.5 mm
Substrate:Thickness: 1.58 mmPermittivity: 4.3 (FR4)
![Page 5: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/5.jpg)
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S-parameters of a Single Array
A resonant frequency of 920 MHz can be observed.
![Page 6: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/6.jpg)
NDSU : APPLIED ELECTROMAGNETICS LAB
Series Fed-arrays Under Test
Texas Instruments Passive UHF RFID tag [1]:Read sensitivity: - 13 dBmWrite sensitivity: -9 dBm
[1] Texas Instruments, [online], www.ti.com
![Page 7: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/7.jpg)
NDSU : APPLIED ELECTROMAGNETICS LAB
Series Fed-arrays Under Test
Two UHF RFID reader
antennas, mounted on a
Styrofoam block, connected
in series in the anechoic
chamber, formed as a
travelling wave antenna.
![Page 8: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/8.jpg)
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Coverage results
Good coverage up to 22.86 cm.
![Page 9: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/9.jpg)
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Normalized fields at 920 MHz
x-z plane y-z plane
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Simulated Surface Currents at 920 MHz
![Page 11: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/11.jpg)
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Antenna Design
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Design Guidelines
1) Simulated S-parameters for a single metamaterial-based RFID reader antenna for various values of m (stub length).
2) The stub width n was also varied in a similar manner and no change in the resonant frequency was observed.
3) Similarly, the dimensions of the patch were increased and decreased by 15% and very little change in resonant frequency was observed.
![Page 13: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/13.jpg)
1) The S-parameter results in this work show that a compact UHF RFID reader antenna can be developed for near-field UHF RFID applications.
2) The read-range measurements show that spatially broad near-field coverage can be achieved by connecting multiple antenna in series. This coverage can also be observed from the simulated fields.
3) The simulated currents show that this antenna supports current on the radiating patches and the matching stub.
Discussion
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![Page 14: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/14.jpg)
1) A new metamaterial-based UHF RFID reader antenna has been presented.
2) This antenna can be connected in series for broad near-field coverage at 920 MHz.
3) Measurement and simulation results were compared.
4) Initial discussion and guidelines on designing the antenna have been presented.
Conclusion
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![Page 15: A Metamaterial-Based Series Connected Rectangular Patch Antenna Array for UHF RFID Readers Benjamin D. Braaten Sayan Roy* Sanjay Nariyal Masud A. Aziz.](https://reader030.fdocuments.in/reader030/viewer/2022032722/56649ce25503460f949ad2ba/html5/thumbnails/15.jpg)
Thank you for listening!
Questions?
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